Any barbarian can choose these rage powers, provided she meets the prerequisites. In addition, other classes (such as skalds) who meet the prerequisites can access the rage powers described below.

Combat Feast (Ex)

Once per day while raging, the barbarian can eat a bit of the corpse of a freshly-felled non-undead enemy (that died within the last minute) as a full-round action to heal herself. The barbarian heals a number of points of damage equal to 1d6 per two barbarian levels + the character’s Constitution modifier. Damage healed this way is subtracted from the next attempt to revive the corpse with breath of life or a similar effect.

Magic Scent (Ex)

The barbarian gains the scent ability but only to detect magic items; creatures and objects currently under the effect of spells; and any other auras detectable with detect magic. When the barbarian uses a move action to note the direction of a scent, she learns the aura's strength and can make a Spellcraft check to recognize the school of magic even if she is untrained (as described in the spell detect magic). If the barbarian also has the scent ability from another source, magic scent's range increases by 30 feet. The barbarian must be at least 10th level to select this rage power.

Refuge in Madness (Ex)

While the barbarian has any of the following conditions, she uses the effects of the confused condition instead of her condition's typical effects: cowering, dazed, frightened, nauseated, stunned, or panicked. The barbarian must be at least 6th level to select this rage power.

Shared Refuge in Madness (Ex)

Once per rage, the barbarian can extend her insanity to an ally that can hear her within 30 feet as a swift action. If the ally is willing, that ally gains the benefits of her refuge in madness rage power until the rage ends or the ally can no longer perceive the barbarian. The barbarian must have the refuge in madness rage power to choose this rage power.

Terrible Revelation (Su)

As a swift action after she has identified an enemy with a Knowledge skill or Profession (Yog-Sothothery philosopher) during a delirious frenzy, the barbarian can shout a terrible insight learned from her delirious frenzy to grant all allies that can hear her an insight bonus equal to half her barbarian level on attack rolls against that enemy to confirm critical hits. Those allies must succeed at a Will save against DC 10 + 1/2 the enemy's CR or be shaken for 1 round. The barbarian must have the delirious frenzy ability to choose this rage power.